The following code example is taken from the book
C++17 - The Complete Guide
by Nicolai M. Josuttis,
Leanpub, 2017
The code is licensed under a
Creative Commons Attribution 4.0 International License.
#ifndef VARTMPLAUTO_HPP
#define VARTMPLAUTO_HPP
#include <array>
template<typename T, auto N> std::array<T,N> arr{};
void printArr();
#endif // VARTMPLAUTO_HPP